<template>
  <div class="list" ref="wrapper">
      <div>
        <div class="area">
            <div class="title border-topbottom">当前城市</div>
            <div class="button-list">
                <div class="button-wrapper">
                    <div class="button">{{this.currentCity}}</div>
                </div>
            </div>
        </div>
        <div class="area">
            <div class="title border-topbottom">热门城市</div>
            <div class="button-list">
                <div class="button-wrapper" v-for="item in hot" :key="item.id" @click="handleCityClick(item.name)">
                    <div class="button">{{item.name}}</div>
                </div>
            </div>
        </div>
        <div class="area" v-for="(item,key) in cities" :key="key" :ref="key">
            <div class="title border-topbottom">{{key}}</div>
            <div class="item-list">
                <div class="item border-bottom" v-for="item2 in item" :key="item2.id" @click="handleCityClick(item2.name)">
                    {{item2.name}}
                </div>
            </div>
        </div>
    </div>
  </div>
</template>

<script>
import BScroll from '@better-scroll/core'
import {mapState,mapMutations} from 'vuex'
export default {
    props:{
        cities:Object,
        hot:Array,
        letter:String
    },
    computed:{
      ...mapState({currentCity:'city'})
    },
    mounted(){
        // let wrapper = document.querySelector('.list')
        // this.scroll = new BScroll(wrapper)
        this.scroll = new BScroll(this.$refs.wrapper)
    },
    watch:{
        letter(){
            console.log(this.letter);
            if(this.letter){
                const element=this.$refs[this.letter][0]
                this.scroll.scrollToElement(element)
            }
        }
    },
    methods:{
      handleCityClick(city){
        // this.$store.dispatch('changeCity',city)
        this.changeCity(city)
        this.$router.push('/')
      },
      ...mapMutations(['changeCity'])
    }
}
</script>

<style lang="stylus" scoped>
@import "~@/assets/styles/varibles.styl"
  .border-topbottom
    &:before
      border-color: #ccc
    &:after
      border-color: #ccc
  .border-bottom
    &:before
      border-color: #ccc
  .list
    overflow: hidden
    position: absolute
    top: 1.58rem
    left: 0
    right: 0
    bottom: 0
    .title
      line-height: .54rem
      background: #eee
      padding-left: .2rem
      color: #666
      font-size: .26rem
    .button-list
      overflow: hidden
      padding: .1rem .6rem .1rem .1rem
      .button-wrapper
        float: left
        width: 33.33%
        .button
          margin: .1rem
          padding: .1rem 0
          text-align: center
          border: .02rem solid #ccc
          border-radius: .06rem
    .item-list
      .item
        line-height: .76rem
        padding-left: .2rem
</style>